Hi Grace,
Since 3.7.0, Recursor distributes queries to the threads itself. See
https://doc.powerdns.com/md/recursor/settings/#pdns-distributes-queries
Additional it hashes the queries with the goal to send the same query to
the same thread. This improves the cache hit rate and thus the average
Grace Wang writes:
>> I installed pdns-recursor 4.0.3 on a CentOS 6.5 box, that has 20 physical
>> cores and 128G RAM. When I set the threads in /etc/pdns-recursor/
>> recursor.conf to be 4 or 12, then issued tons of queries (one query sent
>> multiple times using multiple dnsperf instances simul
